class Dbconfig(object):
    USERNAME='root'
    PASSWORD='qwert12345'
    HOST='127.0.0.1'
    PORT='3306'
    DATABASE='db_demo1'
    DB_URI='mysql+pymysql://{}:{}@{}:{}/{}?charset=utf-8'\
        .format(USERNAME,PASSWORD,HOST,PORT,DATABASE)
    SQLALCHEMY_DATABASE_URT=DB_URI
    SQLALCHEMY_TRACK_MODIFICATIONS=False
    SQLALCHEMY_ECHO=True